From: Qi Zhang <qi1.zhang@intel.com>
To: devel@edk2.groups.io
Cc: Qi Zhang <qi1.zhang@intel.com>, Jiewen Yao <jiewen.yao@intel.com>,
Jian J Wang <jian.j.wang@intel.com>,
Chao Zhang <chao.b.zhang@intel.com>,
Rahul Kumar <rahul1.kumar@intel.com>
Subject: [PATCH 2/2] SecurityPkg/Tcg2Config: remove TPM2_ChangEPS if it is not supported.
Date: Tue, 16 Jun 2020 15:30:51 +0800 [thread overview]
Message-ID: <20200616073048.2019-3-qi1.zhang@intel.com> (raw)
In-Reply-To: <20200616073048.2019-1-qi1.zhang@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2793
In current implementation TPM2_ChangeEPS command is always available
in the TPM2 operation pull down list in TCG2 Configuration, which
is confusing when the command is not supported by specific TPM chip.
As a user experience improvement, TPM2_ChangeEPS command should be
removed from the list when it is not supported.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Qi Zhang <qi1.zhang@intel.com>
---
SecurityPkg/Tcg/Tcg2Config/Tcg2Config.vfr | 2 ++
SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigImpl.c | 7 +++++++
SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigNvData.h | 1 +
3 files changed, 10 insertions(+)
diff --git a/SecurityPkg/Tcg/Tcg2Config/Tcg2Config.vfr b/SecurityPkg/Tcg/Tcg2Config/Tcg2Config.vfr
index 91a463997c..47d63b009d 100644
--- a/SecurityPkg/Tcg/Tcg2Config/Tcg2Config.vfr
+++ b/SecurityPkg/Tcg/Tcg2Config/Tcg2Config.vfr
@@ -144,7 +144,9 @@ formset
option text = STRING_TOKEN(STR_TCG2_DISABLE), value = TCG2_PHYSICAL_PRESENCE_DISABLE, flags = RESET_REQUIRED;
option text = STRING_TOKEN(STR_TCG2_CLEAR), value = TCG2_PHYSICAL_PRESENCE_CLEAR, flags = RESET_REQUIRED;
option text = STRING_TOKEN(STR_TCG2_SET_PCD_BANKS), value = TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS, flags = RESET_REQUIRED;
+ suppressif ideqval TCG2_CONFIGURATION_INFO.ChangeEPSSupported == 0;
option text = STRING_TOKEN(STR_TCG2_CHANGE_EPS), value = TCG2_PHYSICAL_PRESENCE_CHANGE_EPS, flags = RESET_REQUIRED;
+ endif
option text = STRING_TOKEN(STR_TCG2_LOG_ALL_DIGESTS), value = TCG2_PHYSICAL_PRESENCE_LOG_ALL_DIGESTS, flags = RESET_REQUIRED;
option text = STRING_TOKEN(STR_TCG2_DISABLE_ENDORSEMENT_ENABLE_STORAGE_HIERARCHY), value = TCG2_PHYSICAL_PRESENCE_DISABLE_ENDORSEMENT_ENABLE_STORAGE_HIERARCHY, flags = RESET_REQUIRED;
endoneof;
diff --git a/SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigImpl.c b/SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigImpl.c
index baa8fcd08d..464cacc207 100644
--- a/SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigImpl.c
+++ b/SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigImpl.c
@@ -788,6 +788,7 @@ InstallTcg2ConfigForm (
CHAR16 TempBuffer[1024];
TCG2_CONFIGURATION_INFO Tcg2ConfigInfo;
TPM2_PTP_INTERFACE_TYPE TpmDeviceInterfaceDetected;
+ BOOLEAN IsCmdImp = FALSE;
DriverHandle = NULL;
ConfigAccess = &PrivateData->ConfigAccess;
@@ -870,6 +871,12 @@ InstallTcg2ConfigForm (
HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_TPM2_SUPPORTED_HASH_ALGO_CONTENT), TempBuffer, NULL);
}
+ Status = Tpm2GetCapabilityIsCmdImpl(TPM_CC_ChangeEPS, &IsCmdImp);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "Tpm2GetCapabilityIsCmdImpl fails %r\n", Status));
+ }
+ Tcg2ConfigInfo.ChangeEPSSupported = IsCmdImp;
+
FillBufferWithBootHashAlg (TempBuffer, sizeof(TempBuffer), PcdGet32 (PcdTcg2HashAlgorithmBitmap));
HiiSetString (PrivateData->HiiHandle, STRING_TOKEN (STR_BIOS_HASH_ALGO_CONTENT), TempBuffer, NULL);
diff --git a/SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigNvData.h b/SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigNvData.h
index a91c052850..b84af40a04 100644
--- a/SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigNvData.h
+++ b/SecurityPkg/Tcg/Tcg2Config/Tcg2ConfigNvData.h
@@ -70,6 +70,7 @@ typedef struct {
UINT8 TpmDeviceInterfaceAttempt;
BOOLEAN TpmDeviceInterfacePtpFifoSupported;
BOOLEAN TpmDeviceInterfacePtpCrbSupported;
+ BOOLEAN ChangeEPSSupported;
} TCG2_CONFIGURATION_INFO;
//
--
2.26.2.windows.1
next prev parent reply other threads:[~2020-06-16 7:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-16 7:30 [PATCH v2 0/2] refine TPM2 operation pull down list Qi Zhang
2020-06-16 7:30 ` [PATCH 1/2] SecurityPkg/Tpm2CommandLib: add new function Tpm2GetCapabilityIsCmdImpl Qi Zhang
2020-06-16 7:30 ` Qi Zhang [this message]
2020-07-05 12:37 ` [PATCH v2 0/2] refine TPM2 operation pull down list Zhang, Qi1
2020-07-05 23:59 ` Yao, Jiewen
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